At Next Gen Diesel, we offer excellent support for GM's 6L50-E Transmission, as used in the 2.8L DuraMax Colorado/Canyon! GM began using the 6L50-E Transmission in these trucks in model year 2016, and currently uses this transmission today. Our product catalog includes complete transmissions, total rebuild kits, valve bodies, torque converters and parts. View our 6L50-E transmissions and parts here!